Historical on-time performance
Denver to Williston
582 miData through May 2026Source: US DOT · BTS
Flights on DEN–XWA arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 1,452 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time75%Medianon timep9050 minCancel1.2%Flights1,452
Why flights run late
Delay causes
- Airline37%
- Weather15%
- Air traffic (NAS)13%
- Late aircraft35%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather83%
- Air traffic (NAS)17%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 18 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DEN → XWA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 83% on time.
- Mornings83% on time · p90 25 min · 729 flights
- Overnights78% on time · p90 40 min · 1,030 flights
- Middays78% on time · p90 35 min · 1,592 flights
- Afternoons68% on time · p90 100 min · 335 flights
- Evenings66% on time · p90 55 min · 201 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 80% on time.
- Tuesdays80% on time · p90 30 min · 560 flights
- Wednesdays79% on time · p90 30 min · 562 flights
- Saturdays79% on time · p90 35 min · 449 flights
- Mondays78% on time · p90 35 min · 581 flights
- Thursdays77% on time · p90 40 min · 574 flights
- Fridays75% on time · p90 45 min · 583 flights
- Sundays73% on time · p90 45 min · 578 flights
Keep exploring